チタン

22
Ti
4
周期
4
ブロック
d
陽子
電子
中性子
22
22
26
一般特性
原子番号
22
原子量
47.867
質量数
48
カテゴリ
遷移元素
銀色
放射性
いいえ
From the Latin titans, the first sons of the Earth, Greek mythology
結晶構造
六方最密構造
歴史
William Gregor found the oxide of titanium in ilmenite in 1791.

Martin Heinrich Klaproth independently discovered the element in rutile in 1795 and named it.

The pure metallic form was only obtained in 1910 by Matthew A. Hunter.

In 1936, the Kroll Process made the commercial production of titanium possible.
電子殻
2, 8, 10, 2
電子配置
[Ar] 3d2 4s2
Ti
Titanium is one of the few elements that burns in pure nitrogen gas
物理特性
固体
密度
4.54 g/㎝3
融点
1941.15 K | 1668 °C | 3034.4 °F
沸点
3560.15 K | 3287 °C | 5948.6 °F
融解熱
18.7 kJ/mol
蒸発熱
425 kJ/mol
熱容量
0.523 J/g·K
地殻中における存在比
0.66%
宇宙空間における存在比
0.0003%
A
画像の出典: Wikimedia Commons (Alchemist-hp)
A titanium crystal bar made by the iodide process at URALREDMET in the Soviet era
CAS登録番号
7440-32-6
PubChem CID Number
23963
原子特性
原子半径
147 pm
共有結合半径
160 pm
電気陰性度
1.54 (ポーリングの値)
イオン化エネルギー
6.8281 eV
モル体積
10.64 ㎝3/mol
熱伝導率
0.219 W/㎝·K
酸化数
-1, 2, 3, 4
用途
Titanium is used in steel as an alloying element to reduce grain size and as a deoxidizer, and in stainless steel to reduce carbon content.

Titanium has potential use in desalination plants for converting sea water into fresh water.

Titanium is used in several everyday products such as drill bits, bicycles, golf clubs, watches and laptop computers.
Titanium metal is considered to be non-toxic
同位体
安定同位体
46Ti, 47Ti, 48Ti, 49Ti, 50Ti
不安定同位体
38Ti, 39Ti, 40Ti, 41Ti, 42Ti, 43Ti, 44Ti, 45Ti, 51Ti, 52Ti, 53Ti, 54Ti, 55Ti, 56Ti, 57Ti, 58Ti, 59Ti, 60Ti, 61Ti, 62Ti, 63Ti